Method, device and system for processing a signal optical network

摘要

A method for processing a signal optical network in a passive optical network, comprising: an optical line terminal, generating a first polarization component and second polarization component in accordance with an optical source signal, wherein the first component polarization and the second polarization component are perpendicular to each other; modular downlink data in the first polarization component, and enter the first polarization component, in which downlink data are modulated at a first port of polarization of a beam combiner polarization, introducing the second component polarization, which are not modulated data downlink to a second port of polarization beam combiner polarizing combining the two polarization components input into a third optical signal and sending the third optical signal to a network optics; receiving, by the beam combiner polarizing a fourth optical signal sent by the optical network unit, where the fourth optical signal is obtained by the optical network unit rotating an angle of 90 degrees each polarization component of the third signal optical received at the optical network unit and performing a modulation of uplink data into two polarization components of the third optical signal received at the optical network unit; provide at the output a polarization component of the fourth optical signal at the first port of polarization and provide, at the output, another polarization component of the fourth optical signal at the second port of polarization; and demodulate uplink data from the polarization component provided at the output from the first polarization port and isolate the polarization component provided at the output from the second port polarization.